Changeable exhibitor



F. w. HoBAN 1,797,773

CHANGEABLE EXHIBITOR Filed Aug. 27, 192e '2 sheets-sheet 1 J u w @o March 24, 1931.

Voz

5... 7u a m x n n x March 24, 1931. W, HOBAN GHANGEABLE EXHIBITOR Filed Aug. 27, 1928 2 Sheets-Sheet 2 t to Patented Mar. `22.4, 1931 `UNI-.rauf'STATES PMENTl OFFICE FAIRFIELD-m1110173, or",` NNW YQRK, N. Y., `1.\ si-",IsrNon. To W. T. McGovERN, or f v NEW YORK, N. Y;

A C11-.sinc-nnisnn EXHIBITOR f i Irpiniaannimd Angustia?, 1552s.. serial Nb. 302,322.

' My invention relates to improvements' in means for presenting to viewin succession pictures, advertisements'or the like, and the same has for its object. more particularly'to 5 provide a. simple, eficient-an'd attractive ide-f vice which is quickly actuated intermittently to expose to viewfthepictures',advertisements orthelike.y j Further, said invention yhasfor its, object to provide a device lof the character specified in wliich the several elements or drums thereof for supporting v'the pictures, advertisements or the like are actuated at 'intervals Ywith a snap action and locked 'momentarily againstmov'ementin each position thereof. urther, said invention has for its object to providea device ofthe character specified A in whi'cha plurality ofiv means are providedV upon each of said .supporting elements, drums ing my said invention;` i

5 Fig. 2 is a sidefelevati Jn thereof broken away'; i' Fig. 3 is a section onthe'line '3 3 yof Fig. 4'; i Fig. 4 is a sectional planthereofgvl I Fig. 5 is an enlarged detail v ie'w, with parts broken away andy parts in siecti'on,of one of the strip supporting elementsor' drums; i

Fig. 6 is a section on the line 6 6 'of Fig. 41; 'Fig 7 is a detail elevation ofa friction spring fora drum.; and l "i Fig. 8'is afp'lanof one of'th'e strips adaptedY to bearia portionof a picture, advertisementor otherprinte'dinatter or pictorial're'presentationto be displayedr -l i i 1 Referring to the drawings,"thfe" device comprises a base n 10, "laterali uprights or stand- .or prisms for detachably receiving andretair'i-V ards l2, and a forward frame v14 having an opening 16 therein.` yThe uprights 12 are braced bysuitable cross rods 18. Supporting members or drums 20-are disposed one above the other. in spaced relation between the standards l2l and rotatably supported at the ends thereof by'said standards. v'Each supporting member l2() comprises a tube 2 2. One

endofeachtube22 is closed by a trunnion member 24 projecting through the contiguous upright l2, and'having Vatriangular or other 'polygonally shaped strip attaching memberl or support 26y secured thereon fori rotation therewith and retained in position by the nut 28.' The opposite end of the tube 22 isV closed by a' member 30 having a cup-shaped portion 32 extending `into the end yof 'the tube 22, and a trunnionportion 34 disposed axially within the cup-shaped portion and extending outwardly beyond the same: Each trunnion portion 34' extends' into-the recessBG of the bea-ring38 whichis inovably disposed in the opening 4() through the standard 12 thereof. A triangular or other polygonally shapedv strip attaching'member or support 42 cooperating with the'support26 is slidably mounted on thetrunnion .portion 34' and is normally retained against the inner end ofthe'member 38 bythe coil .spring r44' disposed upon the trun-v nion portion 34l between the Asupport 42 and l retardingthe rotation of the drums 20. I

`The `corresponding edges of leach pair of veo members or elements 26, 42 are each provided Y with projections or studs 56 for securing the strips 58 having the stud receivingholes 60.

The'deviceillustrated is capable of displaying in succession-three pictures, advertisements yor other representations. In applying the latter1tothe device, the card boards -or ing member engaging said spring'means at intervals for tensioning the same and releasing said locking means; said actuating member releasing said spring means to actuate said supporting means and permit of the return'of said locking means to normal position.

3. A device of the character described comprising supporting means for pictures or advertisements movably mounted to expose the surfaces thereof to View successively, a spring a rotatable shaft connected thereto, av ratchet v secured on said shaft, a perforated Vlocking member secured to .said shaft a spring dis-v posed on said shaftand secured at one end to a fixed support, an arm movably mounted on said shaft and retained in elevated position by said spring, a pawl carried by said arm cooperating with said ratchet, a spring detent secured to said base and normally engaging said locking member t-o retain said shaft against rotation, means on said arm for releasing said detent, a rotatable' cam adapted to periodically engage said armV to tension said spring and release said detent,

and to release said arm for actuating said supporting means by said spring through said pawl and ratchet, and for permitting the return of said detent to locking position, and power means for actuating said cam.

5. A device of the character described comprising a plurality of drums rotatably mounted in superposed position, and each having a plurality of surfaces; each set of the corresponding surfaces of said drums being movable into exposed aligned position; transmisf sion mechanism connecting said drums to gether for joint movement in the same direction, spring means for actuating said tra-nsmission mechanism including a unidirectionally operative connection, locking means for retaining each set of corresponding surfaces in exposed position as the sets are moved to said position, an actuating member for tensioning said spring means and releasing said locking means at intervals; said actuating member releasing said vspring means to cause v the actuation of said drums and the locking thereof in each exposed position, and power means for actuating said member.

6. Adevice of the character described com- Y yprising a plurality of superposed drums,

successively into exposed position to bring the corresponding sides of said drums into alignment, fa plurality of sets of strips; the strips of each set forming when arranged in order edge to'edge a surface for a picture -or advertisement, a pair of stripengaging members on each side of each drum movable towards and away from each other, a spring normally maintaining said membersin separated relation, and inter-engaging means on each strip and each pair of members for securing the strip in place in taut condition.

In testimony whereof, I have signed. my nameV hereto.

FAIRFIELD W. HOBAN.

each having a plurality of sides movableV lll) 

